Adjustable portable door fastener



R. E. MAcKELLAR. ADJUSTABLE PORTABLE DOOR FASTENER.

APJPLILMTIQN FILED MAR. ll, L L, Pat J n fi 2 SHEETS-SHEET I.

U l? I fiEMKeZZ-ar R. E. MAcKELLAR. ADJUSTABLE PORTABLE DOOR FASTENER.

Patentedjune 6,1922.

I 2 SHEETS-SHEET 2.

APPLICATION FILED MAR. H. 1921- I attuned;

REM/r6 2m]:

arren STATES]- Ronm'r n. MACKELLARQ Asirnann, 0 10,,

ra rsrsrr ADJUSTABLE roia'riinrn noonrAs'rn'ivER.

T 0 all whom it may concern: I Be it known that I, Ronnn'r KELLAR, acitizen of the United States, re-

:siding at Ashland,- in the county of Ashland and State of Ohio, haveinvented a new and useful Adjustable Portable Door Fastener,

; of which the following is" a specification.

' shown in horizontal section;

The object of my invention is to provide I ban adjustable portablefastener which a person can carry from place to place and" readily applyto any door to preventunauthorized entrance 'from the outside, inasmuchas the fastenercan not b'efi'forced or jimmied oil the door withoutbreaking off the casing or door;'-and to provide a fastenor of this kindadapted to fit any of several varietiesof doors. It is also an object ofmy invention to provide a 'fastener oi this type whichican be applied totheadoor without the aid of screws, bolts or other tools and which maybe put on in a few secends. I attain these and other objects of of theinvention with a flush door and door casing shown in horizontal section;

Fig. 7 is a section on lines 7-7 of Fig. 5; and i Fig. 8 is a detailsectional view. on line 88 of Fig. 6. I

Like numerals designate like parts in each of the several views.

Referring to the accompanying drawings.

My invention is adapted for use either with a door which is flush withthe jamb as illustrated in Fig. 6, or with a door where the j ambprojects beyondthe door as illus-. trated in Fig. 2. In either instance1 deslgnates the door and 2 the door j amb, having the usual boltopening '3. I provide a lock bar 4 having a hook end 5 adapted to engagein the bolt opening 3 in the door j amb. Lock bar 4; is provided with abent outer end to which is attached a chain 7 which engages in opening'8in the lock arm 9.

Specification of reads rate'nt'.

E. MAC-I;

' The inner'edge of lock farm 9 Patented June :6, 1922. I

. Application filed-March 1 1, 192 1." Se"ria1No 151,530.

k *ZLFIH 9 is provicled with an enlarged ably groovedfba-se or shoulder'llinay be rovided with a suitable protective covering 1 shoulder orbase 11 with which the member r 9 forms Ran L-shap'ed element.Thepreier- 13' of rubber, fel'tor the like. Lock arm 9 is provided witha slantingnotelied *oiiteii T edge-asshown-i'n Figs. '2 and 'o; Lock bar4 is provided with a suitable slot 15 on which is slidab'ly mounted anadjusta'ble s1ot' iec1e-14,as shown in Fig.

or a slide plate 17 ,and overlapping portion 18 as shown in F 5, whichtogether have I i a corresponding function to that 'of memher 14. Member14 is provided with a *s'uitable ,set screw- I6," and mei'nber 17 "is"pro vided with a sui'ta'blef'set scre'w19, tlieiiinc tion of which isidentical, namely, tov secure the slide piece l and slidefplatel?i'esp'ec tively in adjusted positions abutting against the notched edgechain or lock bar.'9

shown in Fig. 3 and Fig. 5{

withfa suitable longitudinal eirte'ndingdove- "s provided i tail groove'l2 in which mayl'b'e suitably mounted a correspondingly dovetailed block20, as shown in FigKG, said block'2 O being provided only when the lockis used with a type of door wherethe "door and .jamb are flush, in-whichcase it is necessary to fill in thesplace between the'inner edge of thelook and "the door j amb, as shown in the a form zolf theinventionilliistrated 1 in Fig. 6. Blocl'r 20 is provided with asuitable pro'-' tective covering 21 of felt rubber or like material onthat surface of the block which abuts against the door jamb.

I may provide a soft filler of rubber or other material (not shown) tobe placed in groove 12 as a protection against marring the finish ofthewoodwork, block arm 9 is i used without block 20, saidiiller having theJ same function as theprotective covering 21" shown in Fig. 6.

To apply the device the door 1 is opened and the lock bar hook 5. isinserted in the opening 3 of'the lock casing plate of the conventionallock used already-on the door. The lock bar t will'thenprotrude past"the edge or" the door and far enough pastithe casing so thatftlielockarm 9 can be in serted in the slot 15 of the lock bar. The

slide piece 14 (as shown in Fig. 3 or the i similarly functioning slideplate. 17, is moved intoabutment with the notched slanting outer edge oflock arm 9 and secured 'in engagement therewith by tightening the Itailed correspondingly with the dovetailed tion of the inventionotherwise being the groove in lock arm 9 is slid into engagementtherewith, so as to abut agalnst the door amb or casing as shown in Fig.6, the operasame as that of the form of the device shown in Figs. 1-3.Once the fastener is on in the manner describedthe only. way to removeit is to take it off from the inside as it is notexposed from theoutside and cannot be removed from the outside without breaking the dooror casing. I

In the case of an old door the adjustable slide piece is moved furtherback making use of the larger portion of the slide 15 so as'to permitthearm 9 to move out further, thus giving the same effect and result, as isobtained on the standard door. 'It will be observed that the device isreadily portable and can be applied to various kinds of doors providingan eflicient fastener which can not be tampered with without breaking inthe door itself. 7 a

What I claim is 1. In a portable adjustable fastener of the classdescribed, a hook end engaging in the bolt opening of the door casing,said bar having a longitudinal slot, a securing element slidably mountedin said slot, a set screw securing said element in adjusted position, anapproximately L-shaped' lock arm insertable through the said slide inthe lock bar, saidlock arm having. a slanting notched I outer edge withwhich the securing element engages, a chain connecting the lock arm withthe outer edge of the lock bar, said lock bar being horizontallydisposed when in position to lock the door, the aforesaid lock arm beinglongitudinally grooved, and

means slidably mounted on the grooved portion of said lock armforholding same in adjusted spaced relation to a door casing for use ondoor casings that are flush with the door, for the purposes described;

2. Ina portable adjustable fastener of the class described, thecombination of a lock bar having a hook shaped end adapted to engage inthe conventional bolt opening of the door, an adjustable slide pieceslidably mounted on said lock bar, an L-shapedlock arm having a slantingnotched outer edge,

said lock arm having an L-shaped shoulder mounted on the lockarm wherebythe block abutting against the door, a block slidably may abut'againstthe door casing and the L-shaped shoulder of the lock arm may-abutagainst the door, and means for securing the adjustableslide piece insnug engagement with the'notched slanting edge ofthe lock arm, for thepurposes described. In a portable adjustable fastener of the classdescribed, the combinationof a lock bar having a hook shaped end adaptedto engage in the conventional boltropening of the door, an adjustableslide piece slidably mounted on said lock bar, an L-shaped lock armhaving a slantin'gand notched. outer edge, said lock arm having anL-shaped shoulder abutting against the door, and hav-i ing a dovetailedgroove providedalong its longitudinal inner edge, a eorrespondinglydovetailed block slida-bly engaging in said groove, whereby the blockmayabut against the door casing and the L-shaped shoulder of the lock armmay abutagainst the door,

and means for securing the adjustable slide piece in snug engagementwiththe notched slanting bar of the lock arm substantially as and for thepurpose described.

ROBERT E. MAGKELLAR,

